ci(renovate): remove unhandled options to fix pip-compile errors (#565)

The Renovate pip-compile provider is not running due to some options in
the requirements.txt that are set to `None`, which is the actual default.

```
DEBUG: pip-compile: extracted command from header (repository=local)
       "fileName": "containers/sidecar-requirements.txt",
       "argv": [
         "pip-compile",
         "--allow-unsafe",
         "--cert=None",
         "--client-cert=None",
         "--generate-hashes",
         "--index-url=None",
         "--output-file=sidecar-requirements.txt",
         "--pip-args=None",
         "--strip-extras",
         "sidecar-requirements.in"
       ],
       "commandType": "pip-compile"
DEBUG: pip-compile: option not handled (repository=local)
       "option": "--allow-unsafe"
 WARN: pip-compile error (repository=local)
       "matchedFile": "containers/sidecar-requirements.txt",
       "errorMessage": "Option --cert=None not supported (yet)"
```

Removing the options fixes the run.

Signed-off-by: Marco Nenciarini <[email protected]>

Author: mnencia

containers/sidecar-requirements.txt

@@ -2,7 +2,7 @@
 # This file is autogenerated by pip-compile with Python 3.13
 # by the following command:
 #
-#    pip-compile --allow-unsafe --cert=None --client-cert=None --generate-hashes --index-url=None --output-file=sidecar-requirements.txt --pip-args=None --strip-extras sidecar-requirements.in
+#    pip-compile --allow-unsafe --generate-hashes --output-file=sidecar-requirements.txt --strip-extras sidecar-requirements.in
 #
 azure-core==1.35.1 \
     --hash=sha256:12da0c9e08e48e198f9158b56ddbe33b421477e1dc98c2e1c8f9e254d92c468b \